13
Setup Tuning—Full-Range Speakers (cont.)
4) Head Unit
The head unit should have all controls such as bass, treble, balance, and fader set to the flat or centered
position. The volume control should be at the minimum setting. If the head unit has any equalization or bass
management features such as boost, they should be defeated at this time. Turn head unit on and verify that
the GREEN status LED is lit on the amplifier.
6) FRONT and REAR Input Sensitivity Controls
Slowly rotate control clockwise until maximum undistorted playing level is
heard from the speakers. Listen closely for bottoming from the speakers. If
detected, rotate FRONT Input Sensitivity counterclockwise until it is eliminated.
7) FRONT and REAR Crossover Controls
To achieve higher undistorted playing levels from the front speakers, the
FRONT crossover must be engaged. Rotate crossover control fully clockwise.
The highpass crossover point is now set at 350Hz. Rotate FRONT “Q” Control
fully counterclockwise. Move crossover switch to the right (ON) position.
Slowly rotate FRONT input sensitivity control clockwise until maximum undis-
torted playing level is heard from the speakers. Listen closely for bottoming
from the speakers. If detected, rotate FRONT input sensitivity control coun-
terclockwise until it is eliminated. Slowly rotate FRONT highpass crossover
control counterclockwise while listening for bottoming. You are lowering the
crossover point, which means that more bass signal is being sent to the speak-
ers. If bottoming is detected, Rotate FRONT input sensitivity control coun-
terclockwise until it is eliminated and/or rotate the FRONT highpass crossover
control clockwise to raise the crossover point.
5) Volume
With the chosen musical track playing, turn the head unit volume control up until the maximum level of
undistorted signal is heard from the speakers. (For most head units, this will be near the end of the volume
control range.)
WARNING! A distorted signal from the head unit sent to the amplifier can cause loudspeaker failure at high-
er listening levels!
